﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace yinyue
{
    class addLieBiao
    {
        private static addLieBiao liebiao = null;
        private addLieBiao() { }
        public static addLieBiao getLieBiao()
        {
            if (liebiao == null)
            {
                liebiao = new addLieBiao();
            }
            return liebiao;
        }
    }
}
